When I first got my 09 R3T, It pulled to the left so bad it was hard to ride.
I figured it was just the nature of the beast { inline motor the size of a car motor}but after 5000 miles my front tire was bald.
I used a motorcycle jack under the engine to support while loosing all the engine mount bolts.
Then retightened evenly and it solved my problems. I got 12000 miles on my next front and the pulling to the left was gone.
John when you do this use the jack and adjust the motor until you can freely move the front motor mount bolt in and out with no drag then install and torque to specifications.
That may have had much to do with the quality of the tire chosen or with how it was mounted, balanced or maintained, John, although I'm not familiar with anyone other than myself that's running a quality, radial Bridgy up front... the Exedra Max in a 130 size.
Similar but different problem. My 2013 will go for miles, no hands, sitting perfectly upright, no leaning one way or the other. HOWEVER, my original Metzler front tire, at 10,000 miles, is slick on the left side. No crash bars, etc. etc. Was dropped once on the right side, while sitting still, and once on the left side, while a friend was trying to turn her around in his paved driveway. Something ain't right. I'll try to post a pic later, still in robe and sippin coffee here.